RF Shield Frame 1.032" (26.21mm) X 1.032" (26.21mm) Surface Mount The BMI-S-203-F is a surface-mount EMI shield frame (part of a board-level shielding system) manufactured by Laird (now part of DuPont Performance Materials). It is used to enclose and isolate sensitive components on a PCB, helping prevent signal interference and improving electromagnetic compatibility (EMC). It typically comes as a one-piece or frame-style shield that is soldered directly onto the PCB, forming a metallic “cage” over critical circuits. Key Characteristics Product Type: Board-level EMI/RFI shielding enclosure Shield Style: Surface-mount frame (soldered to PCB) Dimensions: ~26.21 mm × 26.21 mm × 5.08 mm Construction Material: Typically cold rolled steel or similar conductive metal Finish: Tin-plated for good solderability Mounting: SMT (surface mount technology) Configuration: Designed for use with cover lids or as part of a two-piece shielding system Function Blocks unwanted electromagnetic interference (EMI) Prevents RF noise from affecting nearby sensitive circuits Improves signal integrity in high-speed or RF designs Helps meet EMC regulatory requirements Typical Applications RF modules and wireless circuits IoT devices Smartphones and compact electronics Communication systems High-speed digital and mixed-signal PCBs #RF-shield #SMT 2 Piece

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